Device for shaping the ends of hollow cores



A L. REAGLES.

DEVICE FOR SHAPING THE ENDS 0F HOLLOW CORES,

APPLICATION FILED !AN.24, 1920.

1,365,271. Patented Jan. 11, 1921.

2 SHEETS-SHEET I. I! T 7 A, L. REAGLES.

DEVICE FOR SHAPING THE ENDS 0F HOLLOW CORES.

APPLICATION FILED JAN 24, I920.

Patented Jan. 11, 1921;

5] I. .71 ea ias UNITED STATES PATENT OFFICE.

ANNIE 1.. smarts, or oo-iarii'rmnnw roimiissreaoa T0 EmxMAir PAPER CORE 00., INC., A conronA'rIou OF NEW YORK.

DEVICE FOR SHAPING THE ENDSOF HOLLOW GORES.

To all whom it may concern:

Be it known that I, ANNIE L. RiiAeLns, a citizen of the United States, and a resident of Corinth, countyof Saratoga, and State of New York, have invented certain new and useful Improvements in Devices for Shaping the Ends of Hollow Cores, of which the following is a full, clear, and exact specifica tion. I

My invention relates to the manufacture of hollow cores or cylinders used by paper manufacturers for winding the paper in rolls of tllQ required size. The paper is shipped out of the factory in the form of these rolls, from which it is subsequently unwound. These hollow cores or cylinders are usually made of paper or fiber wound and cemented upon itself, or pressed into shape from wet stock, under great pressure. The ends of the cores are provided with metallic caps or bushings which are slotted to engage with the driving lugs or keys of the machines on which the rolls of paper are wound and'unwound. The purpose of these metallic caps is to enable the core ends to withstand the strain exerted thereon by the driving lugs of the machines and also to prevent injury to the core endsdue tothe rough handling to which the heavy rolls of paper are subjected. These metallic end caps must be of substantially the same external and internal diam eter as the cores to which they are secured, and it is therefore necessary that the ends of the cores be cut out on the outside and inside sufficiently'to accommodate the walls of the caps, both as to depth andthickness,

so that the caps form in effect a metallic continuation of the paperor fiber body of the core.

The object of my invention is to provide a simple, efficient andeconomical apparatus for shaping thecore ends rapidly and-accurately on the outer and inner walls, so that the metallic cap or bushing is easily slipped on and irictionally held in place by a close and correct fit.

One-embodiment of my invention isaillustrated in the accompanying drawings, in which Figure l is a view, partlyinlongitudina-l cross-section, of that portion of the apparatus which holds the hollow'core or cylinder in position to be operated upon by 14. The structure of these saws is best the cutting. saws of my device;

Fig. 2 is a perspective View of one of the cylindrical saws embodied in the" apparatus;

Specification of Letters Patent.

Patented Jan. 11, 1921.

Application filed January 24, 1920. Serial No. 353,798.

Fig. 3. is a continuation of the apparatus illustrated partially in Fig. l,-showing how the end of the core is simultaneously cut away outside and inside by the two cylindrical saws or cutting members; I t

Fig. 4 1s a vertical cross-section'on line 4l'4= of Fig. 3, looking in the direction of the arrows; and

Fig. 5 is a perspective View of a core (partly broken away), showing how a inetalliccap or bushing is fitted in place.

Referring first to- Fig. 5, the core or cylinder A (of which only a portion is shown) is provided at each end with a metallic cap or bushing indicated as a whole by B. The particular construction of this cap, so far as my'present invention is concerned, is immaterial- It is necessary, however, as already stated, that the outer and inner walls a and Z) of the cap are flush with the outer and inner surfaces of the core, as shown in Fig. 5. For this purpose, the core is provided with an outer cylindrical groove or cutaway section 1 and'a corresponding inner groove '2. Thesegrooves have a depth and width equal to the thickness and length of the walls of the metallic cap B. Inthis way, the metallic cap forms a reinforced continuation of the walls of the paper or fiber core. :To connect the core with the driving mechanism of the machine for winding or unwinding the roll of paper, each end of the core is formed with a slot 3 and the cap with an aline'd slot l. Into the alined slots 3 and 4t enters the driving lug or key of the machine when the core is placed in proper position thereon. i

I will now describe the apparatus for cut ting the grooves or recesses'l and2 in the ends of the core. On a suitable base-plate 5 are supported the bearings 6, in which is rotatably mounted the shaft 7. Any convenient means, such as the power-driven pulley 8, may be employed for operating the shaft 7 Sleeves 9 and 10 are fixed upon the shaft 7 the forward sleeve 9 being preferably readily removablebytaking out the screws 11'. The outer end of the sleeve 9 ispreferably tapered, as indicated at 12, for a purtherewith, are two cylindrical saws 13 and.

shown in Fig. 2. The front or outer edge of each saw is providedwith cutting. teeth 15, and each saw has one or more axial slots 16. In the present instance each saw has three of these slots. The inner saw 14: snugly fits the sleeve 10. A steel ring 17 is fitted over the inner saw 14, and the outer saw 13 surrounds the ring 17, which thus acts as a spacing member for the saws. Any suitable means may be used for securely holding the pair of spaced saws on the shaft 7. In the drawings I have shown screws 18 passing through the ring 17, the inner saw 14 and the sleeve 10 into the shaft 7, whereby those three members are fastened together to the shaft. The screws 18 pass through the slots 16 of the inner saw, as shown in Fig. 3. The outer saw 13 is secured in place on the ring 17 by means of screws 19, which pass through the slots 16 of the saw into the ring 17. If desired, washers 20 of leather, rubber or similar ma terial, may be placed between the heads of the screws 19 and the saw 13. By reason of the slots 16 in the saws, the latter may be adjusted along the shaft 7 by simply loosening the screws 18 and 19. p

The operation of the device will be readily understood from the foregoing description. Referring to Fig. 3, it will be seen that when the core A is slipped over the sleeve 9 and held firmly against the revolving saw teeth 15, grooves or recesses l and 2 will be cut in the outer and inner walls of the core in one operation. The thickness of the shaped end 21 of the core is determined by, and equal to, the thickness of the ring 17. The width of the cutaway portions 1 and 2 may be automatically taken care of in any suitable way. For instance, the saw teeth may be so set from the outer edge 22 of the ring 17 that when the forward edge 28 of the core touches the edge 22 of the ring, the cutaway end 21 will be of the required width. Or, other stop means may be employed for this purpose. Thus, in Fig. 1 I show the rear end of the core A supported on a suitably shaped block 24 mounted on the shaft A casting 26 carries the non-rotatable bearing sleeve 27, through which extends the screw-threaded section 28 of the shaft 25. A key 29, secured to the sleeve 27, engages in the longitudinal slot or groove 30 of the shaft 25, whereby the latter is held against rotation but is capable of a longitudinal movement back and forth. At the outer end of the shaft 25 is mounted a r tatable hand-wheel 31, which is in screw-threaded engagement with the section 28 of the shaft 25. A lug or key 32, engaging the circular groove 33 of the wheel 31, holds the latter against axial movement along the shaft 25.

It is clear from Fig. 1 that as the hand wheel 31 is turned in the right direction, the shaft 25 moves forwardly, carrying the core A against the saw teeth 15. The key 29 and slot 30 of the shaft 25 may be so arranged that when the end or shoulder 3 1 of the slot reaches the key 29, the cutaway portions 1 and 2 at the forward end of the core have reached the desired width.

The sleeves 9 and 10 on the shaft 7 are formed at their adjacent ends with a circular channel or groove to receive the dust from the teeth of the inner saw 1 1. It will be observed from Fig. 3 that the teeth of the saws extend slightly beyond the outer and inner surfaces of the core, thereby insuring a clean, well-defined edge or shoulder at the inner end of each cutaway portion 1 and 2. This projection of the teethlikcwise takes care of any possible variations in the thickness of the core, thus always making a clean cut in the fiber cylinder. The saws 13 and 14 are easily assembled and taken apart. The removable sleeve 9 permits ready withdrawal of the inner saw. The outer saw 1.3 may be removed without disturbing the ring 17 or the inner saw 1 1. I prefer to use three set-screws for each saw, arranged ap proximately 120 degrees apart. The screws 18 and 19, as seen from Fig. 4, are p'refer ably arranged in staggered or off-set relation. The tapered or beveled end 12 of the sleeve 9 permits ready insertion of the core upon the sleeve. If desired, the saws may be stationary and the core revolved, but I prefer the other arrangement.

It will be seen from the foregoing that I have provided a mechanism of simple construction andeflicient operation for shaping the ends of paper or fiber cores to the re quired dimensions inaquick and economical manner. This shaping is uniform, so that any cap of a given size and form will it any core end. Where a half-cap is used that is, an end cap or bushing with only one cylindrical wall, as distinguished from a cap with outer andinner wallsonly one cylin drical saw is required.

Although I have illustrated and described a specific form of apparatus, I will have it understood that I have done so merely to explain the principle of my invention and not by way of limitation or restriction thereof. It is obvious that the/underlying idea of my invention may be mechanically carried out in otherways than that shown.

I claim as my invention:

1. In a device for shaping the ends of hollow cores, a pair of cylindrical saws concentrically mounted and held spaced apart, the forward circular edges of said saws being provided with cutting teeth, a support for holding and guiding a hollow core in axial alinement with said saws and against the cutting teeth, and means for causing relative rotation between the saw teeth and the core, whereby the end of the hollow core is cut away at its outer and inner surfaces to the required thickness.

2. In a device for shaping the ends of hollow cores, a pair of cylindrical saws concentrically mounted and held spaced apart, the forward circular edges of said sawsbeing provided with cuttingteeth, means for revolving said saws, and means for supporting the end of a hollow core in axial alinement with said saw and against the cutting teeth, whereby the end of the hollow core is cut away simultaneously at its outer and inner surfaces to the required thickness.

3. In a device for shaping the ends of hollow cores, a rotatable shaft, a pair of cylindrical saws concentrically mounted on said shaft to rotate therewith, means for spacing said saws the required distance apart, the forward circular edges of said saws being provided with cutting teeth, and a forward extension on said shaft for receiving the end of a hollow core and holding it in axial alinement with said saws, so that the core may be forced against the cutting teeth of both saws.

I. In a device for shaping the end of hollow cores, a rotatable shaft, a pair of cylindrical saws concentrically mounted on said shaft to rotate there-with, means for spacing said saws the required distance apart, the forward circular edges of said saws being provided with cutting teeth, and a forward extension on said shaft for receiving the end of a hollow core and holding it in axial alinement with said saws, so that the core may be forced against the cutting teeth of both saws, said shaft beingprovided with a circumferential recess at the toothed edge of the inner saw to receive the dust therefrom.

5. In a device for shaping the ends of hollow cores, a rotatable shaft, a pair of cylindrical saws concentrically mounted on said shaft to rotate therewith, means for spacing said saws the required distance apart, the forward circular edges of said saws being provided with cutting teeth, a forward extension on said shaft, and a sleeve removably fixed on'said extension to receive the hollow core and hold the samein axial alinenient with the saws, the forward end of said sleeve being tapered to permit the ready insertion of the core.

6. In a device for shaping the ends of hollow cores, a rotatable shaft, a pair of cylindrical saws concentrically mounted on said shaft to rotatetherewith, means for spacing said saws the required distance apart, the forward circular edges of said saws being provided with cutting teeth, a forward exten sion on said shaft, and a sleeve removably fixed on said extension to receive the hollow core and hold the same in axial aline ment with the saws. the forward end of said sleeve being tapered to permit the ready insertion of the core, the forward end of said shaft and the rear end of said sleeve being provided with a circumferential recess at the toothed edge of the innersaw toureceive the dust therefrom.

7'. In a device for shaping the ends of hollow cores, a rotatable shaft, a pair of cylindrical saws concentrically mounted on said shaft to rotate therewith and having cutting teeth on their for "ard circular edges, an annular member between thetwo saws for holding them spaced apart the required distance, means for supporting the end 0 fa hollow core in axial alinement with said saws and against the cutting teeth, whereby the end of the hollow core is cut away at its outer and inner surfaces to the required length and thickness, and means for adjusting the distance between the forward edges of the saws and, the forward of said annular member 8. In a device for shaping the ends of hol low cores, a shaft, an inner cylindrical saw mounted upon said shaft and provided with an axial slot, an adjustable fastening member passing through said slot into the shaft to secure the saw in adjusted position, a metal ring fixedly mounted on said inner saw, an outer cylindrical saw mountedon said metal ring and provided with an axial slot, and an adjustable fastening member passing through the slot of the outer saw into said ring to secure the outer saw in adjusted position, the forward circular edges of said saws being provided with cutting teeth.

9. In a device for shaping the ends of hollow cores, a shaft, an inner cylindrical saw fixed upon said shaft, a ring or sleeve fitted over said inner saw, an outer cylindrical saw fitted on said sleeve, the forward circular edges of said saws having cutting teeth, and means forrigidly fastening said saws and said sleeve upon said shaft, said fastening means being adjustable to permit ready removal of the saws and sleeve from the shaft.

10. In a device for shaping the ends of hollow cores, a shaft havin two sections separated by an annular groove or channel, the forward section being of slightly larger di ameter than the other or rear section and adapted to receive the end of a hollow core, and a cylindrical saw fixed upon the rear section of said shaft, and having an outer diameter slightly larger than the diameter of said forward section, the forward or cutting edge of said saw terminating at said annular groove.

11. In a device for shaping the ends of hollow cores, a shaft, a cylindrical saw fixed upon said shaft and having cutting teeth at its forward edge, said saw being of approximately the same diameter throughout its length and of a thickness at the cutting edge approximately equal to the depth of the cylindrical groove cut in the hollow core, said shaft projecting forwardly beyond the cutting teeth a sufficient distance to form a means for supporting and guiding the end of a hollow core against the cutting teeth, said projecting portion of the shaft being of approximately the same diameter as the internal diameter of the hollow core, and means for producing relative rotation between the saw teeth and the supported core.

12. In a device for shaping the ends of hollow cores, a shaft, a cylindrical saw fixed upon said shaft and having cutting teeth at its forward edge, said saw being of approximately the same diameter throughout its length and of a thickness at the cutting edge approximately equal to the depth of the cylindrical groove cut in the hollow core, said shaft projecting forwardly beyond the cutting teeth a sufficient distance to form a means for supporting and guiding the end of'a hollow core against the cutting teeth, said projecting portion of the shaft being of approximately the same diameter as the internal diameter of the hollow core, an abutment arranged back of the cutting teeth to engage the forward edge of the core and form a stop therefor, said abutment being separate from said saw, and means for pro ducing relative rotation between the saw teeth and the supported core.

13. In a device for shaping the ends of hollow cores, a shaft, a cylindrical saw fixed upon said shaft, and having cutting teeth at its forward edge, said shaft projecting forwardly beyond said saw to form a means for supporting and guiding the end of a hollow core against the cutting teeth of the saw, and an abutment arranged back of the cutting teeth to engage the forward edge of the core and form a stop therefor, said saw and said abutment being relatively adjustable longitudinally.

14. In a device for shaping the ends of hollow cores, a rotatable shaft, a cylindrical saw fixed upon said shaft and having cutting teeth at its forward edge, means for supporting and guiding the end of a hollow core in alinement with the teeth of the saw, mechanism for progressively feeding the core axially against the teeth of the revolving saw, and means for taking up the axial thrust or pressure exerted on said shaft by said feeding mechanism when the core is pressed against the teeth.

15. In a device for shaping the ends of hollow cores, a pair of cylindrical saws and a ring or sleeve rigidly fitted between said saws to hold the same spaced apart, the forward edges of said saws having cutting teeth and the forward edge of said sleeve being at a predetermined distance from the cutting teeth, and a shaft on which said saws and said ring are removably mounted.

ANNIE L. REAGLES. 

